决策树挖掘算法在教评体系中的应用研究

对高校教学质量评估体系中学生的大量评教数据和教师的档案数据进行数据挖掘,重点研究决策树方法中的ID3算法在教学质量评估体系中的应用。利用决策树挖掘算法挖掘影响教学质量的关键因素,找出数据的内在规律,并对挖掘结果进行分析,从中提取有用信息,才能更好地为管理决策分析提供科学依据。     

Origin法拟合Ni2FeAl超顺磁性的研究

Heusler合金Ni2FeAl甩带样品具有超顺磁性,铁磁相和顺磁相在高于Blocking温度时共存。本文运用M.Pissas等人对铁磁和顺磁相的研究方法,对Ni2FeAl的超顺磁现象进行Origin拟合研究,表明随着温度的增加系数α不断增大,铁磁在向顺磁转变,但仍处在超顺磁范围内。     

Automatic generation method of geological cross-sections in dredging engineering based on 3D solid NURBS models

An automatic generation method of geological cross-sections in dredging engineering based on 3D geological solid models is presented.The 3D geological models are built applying the non-uniform rational B-splines(NURBS) technique,and a 2D profile can be calculated and generated automatically through Boolean operation to meet the demands of dredging projects.Moreover,an automatic marking method for geological attributes is put forward based on database technology,and the geological attributes include the profile name,scale,horizontal and vertical relative coordinates,geological lithology,and 2D standard lithology legend.At the same time,the automatic marking method can also provide an interactive mode for geological engineers to edit and modify the profile in the modeling system.Practical engineering applications show that the automatic generation method is a simple,flexible,fast and precise visual graphics rendering process that can create 2D standard profiles automatically and efficiently.This method also provides a convenient support tool for geological engineering digital analysis.     

A tale of two literatures: Transaction costs and property rights in innovation outsourcing

This paper investigates the relative importance of property rights and transactions cost factors in driving the decision of firms to outsource innovation. Using data for over 8000 firms from the UK Community Innovation Survey, we find that property right factors dominate over transaction cost factors. Transaction cost variables are more important for process innovation, while property rights variables are more significant for firms involved in product innovation. In addition, we find that firms involved in process innovation have a higher probability of outsourcing innovation than firms involved in product innovation.     

Stability and dissipative analysis for a class of stochastic system with time-delay

This paper deals with the stability and dissipative problem of a class of stochastic hybrid system. The system under study involves Markovian jump, impulsive effects and time delay, which are often encountered in practice and are the sources of instability. Our attention is focused on analysis of whether the stochastic hybrid system with time-delay is stochastically asymptotically stable and strictly (Q, S, R) dissipative. By introducing an extra artificial time instance, the equivalent system is obtained and the sufficient conditions are derived by using linear matrix inequality (LMI) techniques. The main results of this paper unify the existing results on H_∞ control.     

Openness and innovation—Home and export demand effects on manufacturing innovation: Panel data evidence for Ireland and Switzerland

Recent studies in the tradition of Schmookler have re-emphasised the potential role of demand in stimulating innovation. Here, we reconsider the role of ‘home’ and ‘export’ market demand in stimulating manufacturing innovation using comparable panel data for two small open economies - Ireland and Switzerland. Our analysis is based on the estimation of reduced form innovation production functions using panel data estimators over the sample period 1994-2005. For a range of innovation indicators, however, we find little evidence of any significant market demand effects, with innovation performance instead determined largely by firm-level capability effects and characteristics. In policy and strategy terms this suggests the continued value of measures to improve innovation capability regardless of market demand conditions. In more methodological terms our results suggest the validity of the usual assumption implicit in modelling innovation outputs that supply-side factors predominate.     

The role of ICT knowledge flows for international market share dynamics

This paper investigates the role of Information and Communication Technologies (ICTs) related knowledge flows for international market shares. Using bibliometric data on scientific publications, we analyse the relationship between the strength of 14 OECD countries in four ICT-related scientific fields and the ability of those countries to maintain and acquire export market shares in the OECD market, across 16 manufacturing industries over the period 1981-2003. We find that domestic and foreign ICT-related scientific knowledge flows have a positive and significant impact on export market shares in ICT industries, while only domestic flows positively affect export shares in non-ICT industries. We also find that small open economies benefit more than other countries from foreign knowledge flows both in ICT and in non-ICT industries.     

比格斯教学理论述评

爱现代科技发展的影响，教学开始有追求效率化、精确化和客观化的趋势，并把它们作为科学化的标准。这种功利主义、实证主义的教学具有工具化的倾向，容易使教学与生活相脱离。澳大利亚教学论学者比格斯在批评这种学习理论和教学理论的同时，提出了自己的学习理论和教学理论。     

不同年龄自发性高血压大鼠血管平滑肌Ca2+/CaM-PP活性变化

目的研究不同年龄自发性高血压大鼠血管平滑肌Ca2+/CaM-PP活性变化.方法应用酶活性测定方法,对12周、16周SHR大鼠和Wistar大鼠的A、MA、CA血管平滑肌Ca2+/CaM-PP进行活性比较.结果Wistar大鼠随年龄增长,Ca2+/CaM-PP活性呈上升趋势,而SHR鼠其阻力血管该酶活性降低,但随年龄变化不明显.结论①自发性高血压使阻力血管平滑肌Ca2+/CaM-PP下降,但12周与16周间无显著差异.②不同种鼠血管平滑肌该酶活性变化不同.     

电视节目制作网络化探讨

数字化、网络化技术的迅猛发展，为电视制作带来了全新的工作模式和理念。现代化的工作流程应该基于网络化结构，在各个职能部门和栏目间传递数据流和文件，采用自动化的业务和管理方式，众多工作可以并行处理。而非线性编辑网以其高效率、低成本优势在电视台节目后期制作中日益得到推广、普及，成为电视台数字化推进工作的龙头和重点。